Azure Search の Blob Indexer のサンプルです

AzureSearchHelper.cs

using Microsoft.Azure.Search;
using System.Configuration;

namespace Miso.AzureSearchSample.Models
{
    public class AzureSearchHelper
    {

        public static SearchServiceClient CreateSearchServiceClient()
        {
            string searchServiceName = ConfigurationManager.AppSettings["SearchServiceName"];
            string adminApiKey = ConfigurationManager.AppSettings["SearchServiceAdminApiKey"];

            SearchServiceClient serviceClient = new SearchServiceClient(searchServiceName, new SearchCredentials(adminApiKey));
            return serviceClient;
        }

        public static SearchIndexClient CreateSearchIndexClient(string indexName)
        {
            string searchServiceName = ConfigurationManager.AppSettings["SearchServiceName"];
            string queryApiKey = ConfigurationManager.AppSettings["SearchServiceQueryApiKey"];

            SearchIndexClient indexClient = new SearchIndexClient(searchServiceName, indexName, new SearchCredentials(queryApiKey));
            return indexClient;
        }
    }
}

HomeController.cs

using Microsoft.Azure.Search;
using Microsoft.Azure.Search.Models;
using Miso.AzureSearchSample.Models;
using System.Threading.Tasks;
using System.Web.Mvc;

namespace Miso.AzureSearchSample.Controllers
{
    public class HomeController : Controller
    {      
        public async Task<ActionResult> Search(SearchFormModel model)
        {
            if (model == null)
            {
                model = new SearchFormModel();
            }
            
            model.SearchResultLucene = await SearchIndex(indexName: "booksindex", model: model);

            return View(model);
        }

        private Task<DocumentSearchResult> SearchIndex(string indexName, SearchFormModel model)
        {
            SearchIndexClient indexClient = AzureSearchHelper.CreateSearchIndexClient(indexName: indexName);
            SearchParameters searchParameter = CreateSearchParameters();

            if (!string.IsNullOrEmpty(model.Filter))
                searchParameter.Filter = model.Filter;
            
            return indexClient.Documents.SearchAsync(
                searchText: model.SearchText,
                searchParameters: searchParameter,
                searchRequestOptions: null);
        }

        private static SearchParameters CreateSearchParameters()
        {
            return new SearchParameters()
            {
                SearchMode = SearchMode.Any,
                IncludeTotalResultCount = true,
                HighlightFields = new string[] { "content" },
                Top = 20
            };
        }
    }
}

Search.cshtml

@using Microsoft.Azure.Search.Models
@model Miso.AzureSearchSample.Models.SearchFormModel
@{
    ViewBag.Title = "Search";
    var result = Model.SearchResultLucene;
}

<form class="form-inline" role="search" id="submitform">
    <div class="form-group">
        <input type="search" name="@Html.NameFor(x => x.SearchText)"
               autocomplete="off" size="80" placeholder="検索ワードを入力します"
               class="form-control" value="@Html.ValueFor(x => x.SearchText)"
               id="searchText"  data-provide="typeahead"/>
    </div>
    <button type="submit" id="search" class="btn btn-primary">Search</button>
</form>

<div class="col-md-5">
    <h2>Results:</h2>

    <p style="padding-top:20px">1 - <span class="text-primary">@result.Count</span> of <span class="text-primary">@result.Count</span></p>

    <table>
        <tr>
            <th>Score</th>
            <th>Name</th>
        </tr>
        @foreach (var item in result.Results)
        {
            <tr>
                <td>@item.Score.ToString("0.000")</td>
                <td>@item.Document["metadata_storage_path"]</td>
            </tr>
        }
    </table>

    <!-- Cycle through the search results -->
    @foreach (var item in result.Results)
    {
        <h3>@item.Document["metadata_storage_name"]</h3>
        <p><label class="label-info">Score: @item.Score</label></p>

        <table class="table">
            <tr>
                <td>metadata_storage_content_type</td>
                <td>@item.Document["metadata_storage_content_type"]</td>
            </tr>
            <tr>
                <td>metadata_storage_size</td>
                <td>@item.Document["metadata_storage_size"]</td>
            </tr>
            <tr>
                <td>metadata_storage_content_md5</td>
                <td>@(item.Document["metadata_storage_content_md5"])</td>
            </tr>
            <tr>
                <td>metadata_storage_name</td>
                <td>@item.Document["metadata_storage_name"]</td>
            </tr>
            <tr>
                <td>metadata_storage_path</td>
                <td><a href="@OutputBase64(item.Document["metadata_storage_path"])">URL to download</a></td>
            </tr>
            <tr>
                <td>metadata_content_type</td>
                <td>@item.Document["metadata_content_type"]</td>
            </tr>
            <tr>
                <td>metadata_language</td>
                <td>@item.Document["metadata_language"]</td>
            </tr>
        </table>
        <p>@OutputHilightOrDocument(item, "content")</p>
    }
</div>

@helper OutputBase64(object value)
{
    @System.Text.Encoding.UTF8.GetString(HttpServerUtility.UrlTokenDecode(value.ToString()));
}

@helper OutputHilightOrDocument(SearchResult item, string fieldName)
{
    if (item.Highlights != null && item.Highlights.ContainsKey(fieldName))
    {
        <ul>
        @foreach (var hilight in item.Highlights[fieldName])
        {
            <li>@Html.Raw(hilight)</li>
        }   
        </ul>
    }
}

SearchFormModel

using Microsoft.Azure.Search.Models;

namespace Miso.AzureSearchSample.Models
{
    public class SearchFormModel
    {
        public DocumentSearchResult SearchResultLucene { get; set; }
        /// <summary>
        /// ユーザーが入力する検索テキスト
        /// </summary>
        public string SearchText { get; set; }   
    }
}